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6 Best DeliverySlip Alternatives in 2026 — Free Options Included

Explore 6 alternatives to DeliverySlip — vetted by our editors with real user reviews, pricing, and feature comparisons.

Our 6 top free DeliverySlip alternatives at a glance

Quick answer

Here's the lineup of DeliverySlip alternatives: RMail, Paubox Encrypted Email and Proofpoint Email Encryption. RMail leads on SpotScore (7.9) with a 4.89★ rating. All 6 are compared on score, rating, and price below.

You don't have to settle for DeliverySlip if it isn't working. These 6 email encryption software free alternatives are the strongest replacements, ranked by SpotScore (real-user satisfaction and market presence), star ratings, and pricing. Editors vet each tool. Use the table for a fast comparison, then read the sections below for the full story.

ProductSpotScoreRatingPricingBest for
RMailSecure your emails with RMail, your ultimate solution.7.9★★★★★ 4.89(63)Freefrom $6.99 /User/Monthsmall & mid-size businesses
Paubox Encrypted EmailSecure your sensitive information with ease.—★★★★★ 4.96(107)Freefrom $10 /User/Monthteams of all sizes
Proofpoint Email EncryptionKeep your emails secure and private.—★★★★★ 4.62(13)FreeFree Trial · Quotation Basedteams of all sizes
SendSafelySecure your emails with ease.—★★★★☆ 4.17(6)Freefrom $10/moteams of all sizes
SenditCertifiedEasily secure and send sensitive files.—★★★★★ 5(2)Freefrom $14.50/moteams of all sizes
DropvaultSecure, instant communication for small businesses.—★★★★☆ 4.35(13)Freefrom $15 /User/Monthteams of all sizes

7.9

SpotScore

RMail - Electronic Signature Software

RMail

Secure your emails with RMail, your ultimate solution.

Best for: SMB teams · Mid-market

Start Free Trial

4.9

63 verified reviews

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What is RMail?

Introducing RMail, the ultimate solution for your important messages. Say goodbye to standard email and hello to advanced features. With RMail, you can easily track your emails and receive a Registered Receipt email record for each message, providing proof of delivery, time, and content. Keep ...

Read more about RMail
Free TrialTry Free →·

RMail offers custom pricing plan

Paubox Encrypted Email - Email Encryption Software

Paubox Encrypted Email

Secure your sensitive information with ease.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

5.0

107 verified reviews

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What is Paubox Encrypted Email?

Paubox Encrypted Email is a revolutionary email encryption software that can help to digitally sign, encrypt, decrypt, sign and send email with ease. With Paubox Encrypted Email private information is safe from prying eyes. The advanced security features of Paubox Encrypted Email help for ...

Read more about Paubox Encrypted Email
Free TrialTry Free →·

Paubox Encrypted Email offers custom pricing plan

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Proofpoint Email Encryption - Email Encryption Software

Proofpoint Email Encryption

Keep your emails secure and private.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.6

13 verified reviews

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What is Proofpoint Email Encryption?

Proofpoint Email Encryption is a data loss prevention solution to encrypt email, blocking confidential information from falling into the wrong hands. This software will fit seamlessly into an existing email environment and has been tested with leading Microsoft Exchange, IBM Domino, Novell ...

Read more about Proofpoint Email Encryption
Free Trial·

Proofpoint Email Encryption offers custom pricing plan

SendSafely - Email Encryption Software

SendSafely

Secure your emails with ease.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.2

6 verified reviews

Add to compare

What is SendSafely?

SendSafely is email encryption software that enables to open, modify and send secure emails. It creates an encrypted thread of communication with recipient. SendSafely is easy to use, fast encryption software available to keep private emails private. Encrypting emails with SendSafely for ...

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Free TrialTry Free →
SenditCertified - Email Encryption Software

SenditCertified

Easily secure and send sensitive files.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

5.0

2 verified reviews

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What is SenditCertified?

SenditCertified is a PDF file encryption software that allows to encrypt sensitive documents before emailing them to any destination. The recipient receives the document as an attachment with no special software requirements. With this powerful encryption functionality, user can be sure that ...

Read more about SenditCertified
Free Trial·

SenditCertified offers custom pricing plan

Dropvault - Business Instant Messaging Software

Dropvault

Secure, instant communication for small businesses.

Best for: SMB teams · Mid-market · Enterprise

Start Free Trial

4.3

13 verified reviews

Add to compare

What is Dropvault?

Dropvault is an innovative, cost-effective software for small businesses to communicate with customers and employees. Built from the ground up, it leverages the popular instant messaging technology that regular business users know and love on their own personal computers. Dropvault provides an ...

Read more about Dropvault
Free TrialTry Free →

DeliverySlip competitors, compared

DeliverySlip competes with 6 other email encryption software tools tracked on Spotsaas. The closest by feature overlap are RMail, Paubox Encrypted Email and Proofpoint Email Encryption. Each is compared against DeliverySlip on rating, pricing and feature coverage below.

What else works like DeliverySlip?

Searches for "sites like DeliverySlip" and "apps like DeliverySlip" land on the same shortlist as "DeliverySlip alternatives" — the 6 options below cover both, whether you want a like-for-like replacement or something lighter.

What each DeliverySlip alternative is good at

RMail7.9Best for small & mid-size businesses

Email tracking

Watch for: Limited e-signature features

Paubox Encrypted EmailBest for teams of all sizes

Integration process that is incredibly simple and easy to set up.

Watch for: Limited mobile compatibility; lack of a mobile version.

Proofpoint Email EncryptionBest for teams of all sizes

Integrates into email systems, filtering spam and phishing emails effectively.

Watch for: Some users find the customization for large-scale enterprise environments not fully intuitive.

SendSafelyBest for teams of all sizes

Easy to use interface

Watch for: Limited features for advanced users

SenditCertifiedBest for teams of all sizes

Easy document encryption

Watch for: Limited to PDF files only

DropvaultBest for teams of all sizes

Cost-effective solution

Watch for: Limited features for larger organizations

Why teams look for a DeliverySlip alternative

There are a few common reasons buyers start shopping for a DeliverySlip alternative:

  • May require user training
  • Limited features for advanced users
  • Dependent on internet connectivity

How to choose among DeliverySlip alternatives

Side by side, the 6 free alternatives break down like this: 6 offer a free tier; paid plans run $6.99–$15, with RMail the cheapest entry point; and SenditCertified is the highest rated at 5★ across 2 reviews.

How positions are set.

Frequently Asked Questions (FAQs)

Stuck on something? We're here to help with all the questions and answers in one place.

The top-rated alternatives to DeliverySlip are SenditCertified (5.0★), Paubox Encrypted Email (5.0★), RMail (4.9★). Compare all 6 alternatives side-by-side above.

When evaluating alternatives to DeliverySlip, prioritize: Encryption, End-to-End Encryption, Data Security, Audit Trail, Email Alerts, transparent pricing, free trial availability, and integrations with your existing tools. Use the filters above to compare by feature, budget, and team size.

Migration difficulty depends on how deeply DeliverySlip is integrated into your workflows. Most alternatives offer data export/import tools and dedicated onboarding support. We recommend narrowing to 2–3 options, running a free trial, and checking each vendor's migration guides before committing.

How to settle on the best DeliverySlip alternative

  • On a budget / just exploring: start with a free tier — RMail, Paubox Encrypted Email and Proofpoint Email Encryption let you evaluate without paying upfront.
  • If real-user ratings matter most: SenditCertified has the strongest star rating (5★) among the options with verified reviews.
  • Want the safest pick: RMail has the highest Spotsaas Score (7.9) in this list — a strong default if you're unsure.

How to cut over from DeliverySlip

Before switching off DeliverySlip, run the checks that prevent headaches later. Export your data, verify the import, and confirm feature parity for your must-have workflows. Pilot the new tool free, then migrate, leaving DeliverySlip active until you're done.

Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].