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Head-to-head · Sales Email Tracking Software

Boomerang vs Vocus.io

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Boomerang #2 in Sales Email Tracking Software 9.2/10 Free plan · 30-day trial Free planFree trial✓ 5 of 6 features Visit Boomerang
Vocus.io #5 in Sales Email Tracking Software 8.8/10 30-day trial Free trial✓ 5 of 6 features Visit Vocus.io

Boomerang leads on 1 check, Vocus.io on 0, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreBoomerang · 9.2/10
  • Free planonly Boomerang
  • Free trialboth

Boomerang scores higher on our rubric for sales email tracking software: 9.2 against 8.8 out of 10; our editors rank them #2 and #5.

Boomerang offers free plan; Vocus.io doesn't. On email client support, Boomerang gives you Gmail_and_outlook where Vocus.io offers Gmail.

Boomerang is the better fit for affordable Gmail and Outlook follow-up tracking. Vocus.io is the better fit for gmail sales teams that want tracking and CRM logging.

  • Boomerang fits best

    Affordable Gmail and Outlook follow-up tracking

  • Vocus.io fits best

    Gmail sales teams that want tracking and CRM logging

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Boomerang 9.2/10 Visit ↗ Vocus.io 8.8/10 Visit ↗
At a glance
Editor score 9.2 8.8
Ranking #2 in Sales Email Tracking Software #5 in Sales Email Tracking Software
Best for Affordable Gmail and Outlook follow-up tracking Gmail sales teams that want tracking and CRM logging
Pricing model Free plan + paid Paid
Starting price — $5/user/mo
Free plan ✓ (best) —
Free trial 30 days 30 days
Free trial length 30 days 30 days
Deployment Browser extension, Mobile Browser extension
Platforms Chrome extension, iOS, Android Chrome extension
Integrations 13 integrations 12 integrations
Features Boomerang 5/6 · Vocus.io 5/6
Open tracking ✓ ✓
Click tracking ✓ ✓
Reply tracking ✓ ✓
Attachment tracking Not checked yet —
Real-time alerts ✓ ✓
CRM synchronization ✓ ✓
Specs
Email client support Gmail_and_outlook Gmail
Our review
Pros
  • Tracks opens, clicks, replies, and read receipts on supported plans.
  • Combines scheduled sending, follow-up reminders, and Inbox Pause.
  • Integrates with CRMs, video meetings, Gmail, and Outlook.
  • Tracks opens per recipient, link clicks, and replies.
  • Automates follow-ups and provides templates, snippets, and reminders.
  • Logs email activity to CRMs through auto-BCC, webhooks, and Zapier.
Cons
  • Basic limits users to 10 message credits per month.
  • Personal supports Gmail; Outlook support is not highlighted on that plan.
  • Premium is a substantial jump to $49.98 per user per month, billed annually.
  • Supports Gmail and G Suite, not Outlook.
  • No free plan; the 30-day offer is a trial.
  • Campaign attachments can be sent, but attachment tracking is not supported.
Our verdict

Boomerang is an email productivity and tracking service from Baydin, Inc. It is aimed at people who need to manage email timing and engagement, including sales professionals, support teams, recruiters, and individual users. Gmail and…

Read the review →

For Gmail and G Suite users, Vocus.io combines email tracking with outreach automation and CRM logging. Sales teams can track opens per recipient, link clicks, and replies, then use scheduled sending, follow-up sequences, reminders, and…

Read the review →
  1. BoomerangSales Email Tracking Software 9.2Free plan · 30-day trial
  2. Vocus.ioSales Email Tracking Software 8.830-day trial

Strengths and trade-offs

  • Boomerang — where it wins

    • Tracks opens, clicks, replies, and read receipts on supported plans.
    • Combines scheduled sending, follow-up reminders, and Inbox Pause.
    • Integrates with CRMs, video meetings, Gmail, and Outlook.

    Where it doesn't

    • Basic limits users to 10 message credits per month.
    • Personal supports Gmail; Outlook support is not highlighted on that plan.
    • Premium is a substantial jump to $49.98 per user per month, billed annually.

  • Vocus.io — where it wins

    • Tracks opens per recipient, link clicks, and replies.
    • Automates follow-ups and provides templates, snippets, and reminders.
    • Logs email activity to CRMs through auto-BCC, webhooks, and Zapier.

    Where it doesn't

    • Supports Gmail and G Suite, not Outlook.
    • No free plan; the 30-day offer is a trial.
    • Campaign attachments can be sent, but attachment tracking is not supported.

More comparisons

All sales email tracking software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update