Alternatives

Products that do what SendPorter does

Connect. Deliver. Grow.

1
Mailercloud Email API Platform▲165
1,000+ Emails per Second with 99%+ Deliverability
Mar 2026
2
Send API by beehiiv▲259
Craft and send emails directly from your website or CMS
2025
3IB
I built Mailhub – A scalable API for sending emails with ease not tears▲104
2024 · mailhub.sh
4
Base API▲277
API for authentication, email sending, images and more!
2019
5
Courier▲257
API, designer, and metrics for messaging & notifications
2021
6
Unosend▲205
Send transactional + marketing email w/ 99.9% deliverability
Dec 2025
7
Thanks.io▲146
Direct mail automation platform
2023
8
Postal.io for HubSpot▲81
Send handwritten notes, gifts, or direct mail in minutes
2020
9
Sent.dm▲195
Unified API for sending messages on SMS, WhatsApp, and more
2024
10
Deliveryman.ai▲186
Cold email infrastructure on autopilot without Gsuite
Jun 2026 · deliveryman.ai
11ST
SMTP Tunnel – A SOCKS5 proxy disguised as email traffic to bypass DPI▲140
A fast SOCKS5 proxy that tunnels your traffic through what looks like normal SMTP email, bypassing Deep Packet Inspection firewalls. How it works: - Client runs a local SOCKS5 proxy (127.0.0.1:1080) - Traffic is sent to server disguised as SMTP (EHLO, STARTTLS, AUTH) - DPI sees legitimate email session, not a VPN/proxy Features: - One-liner install on any Linux VPS - Multi-user with per-user secrets and IP whitelists - Auto-generated client packages (just double-click to run) - Auto-reconnect on connection loss - Works with any app that supports SOCKS5 Tech: Python/asyncio, TLS…
Jan 2026 · github.com
12
Sidemail.io▲204
Email delivery made simple for startups
2020
13BA
Base – API for authentication, email sending, images and more▲140
2019 · base-api.io
14
SendHustle▲1
Email campaigns and automations from your own domain
6d ago · sendhustle.com
15
SuperSend 3.0▲94
Sequences, infrastructure, deliverability. One product.
Mar 2026
16
MessageBus▲69
Send email with a powerful API, track it with our platform.
2014
17
DKIM.pro▲3
Monitor SPF, DKIM and DMARC before email breaks
May 2026 · dkim.pro
18
KaiMail▲6
Custom domain emails, simplified
Mar 2026
19
Sendkit▲25
The AI-Native Email Infrastructure
Apr 2026 · sendkit.dev
20PS
Posthorn, self-hosted mail gateway▲83
Introducing Posthorn, a self hosted email gateway. One docker container (or Go binary) between every self hosted app on your VPS and your transactional email provider. Set up Posthorn once, point your apps to it, done. I was trying to deploy Ghost on a DigitalOcean droplet and found that DO and many different VPS services have started to block the default SMTP ports to try to combat the various types of abuse they get. To actually configure my app, I had to hack together a Postfix relay. In another project, I had a static site which had a contact form, but my free Formspree account was…
May 2026 · github.com
21VE
Versatile email infrastructure on AWS serverless▲29
It's a self-hosted mailbox for all emails coming to your own domains, with Web interface and CLI included. Notes: - all emails share the same inbox, as long as set your DNS correctly - Web client via self-hosted Docker or Cloudflare Pages - need additional access controls, may use Basic Auth or Forward Auth with Cloudflare deployment
2024 · github.com
22
Email Deliverability API & Checker▲2
Instantly audit SPF, DKIM & DMARC to stop landing in spam.
26d ago · web-production-80c77.up.railway.app
23
Sendsprite▲1
The email API you run yourself
9d ago · sendsprite.com
24
DKIMCheck▲2
Instant Email Deliverability & DNS Health Scanner
26d ago · dkimcheck.online

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